Brihat Parashara Hora Shastra
त्रिपादं तस्य देवत्य ह्यमृतं तत्त्वदर्शिनः । विदन्ति तत्प्रमाणं च सप्रधानं तथैकपात् ॥ ११ ॥
The other three quarters of Him, filled with nectar, are knowable only to the philosophers (of maturity).
english translation
tripAdaM tasya devatya hyamRtaM tattvadarzinaH । vidanti tatpramANaM ca sapradhAnaM tathaikapAt ॥ 11 ॥
hk transliteration by Sanscript